Computer program (CHMASS) for calculating theoretical characteristic mass values in electrothermal atomic absorption spectrometry

1992 ◽  
Vol 7 (2) ◽  
pp. 461 ◽  
Author(s):  
Michael Berglund ◽  
Douglas C. Baxter
Keyword(s):  
Computer Program ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Characteristic Mass

scholarly journals Quantification of vanadium in serum by electrothermal atomic absorption spectrometry

1996 ◽  
Vol 42 (8) ◽  
pp. 1275-1282 ◽  
Author(s):  
G Heinemann ◽  
W Vogt
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Small Volume ◽  
Limit Of Detection ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Vanadium Content ◽  
Limit Of Quantification ◽  
Characteristic Mass ◽  
Good Agreement

Abstract We describe an ultrasensitive and reliable method for determining vanadium in human serum by electrothermal atomic absorption spectrometry. After lyophilization, the serum is digested in acid at high pressure, and the digests are evaporated to a small volume. Vanadium in the digests is complexed with cupferron, extracted, and dried. The residue is redissolved in formic acid, where it is 15-fold more concentrated than in the original serum sample. To enhance the furnace sensitivity, we injected six 40-microL aliquots (total, 240 microL) of the concentrated extract. The median concentration of vanadium in 108 persons was 50 ng/L, in good agreement with previously reported results by neutron activation analysis. The characteristic mass obtained (the mass required to give a signal of 0.0044A. s) was 28 pg, the limit of detection 11 ng/L, the limit of quantification 17 ng/L, and the total imprecision (CV) 5.5% at 1.54 micrograms/L. In two assays of Standard Reference Material 1577a (certified vanadium content 99 +/- 8 ng/g), we obtained values of 94.1 and 97 ng/g.

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